@neo4j/graphql
Version:
A GraphQL to Cypher query execution layer for Neo4j and JavaScript GraphQL implementations
86 lines • 3.89 kB
JavaScript
;
/*
* Copyright (c) "Neo4j"
* Neo4j Sweden AB [http://neo4j.com]
*
* This file is part of Neo4j.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseArgumentsFromUnknownDirective = parseArgumentsFromUnknownDirective;
exports.parseArguments = parseArguments;
const utils_1 = require("@graphql-tools/utils");
const graphql_1 = require("graphql");
const parse_value_node_1 = require("./parse-value-node");
function parseArgumentsFromUnknownDirective(directive) {
return (directive.arguments || [])?.reduce((acc, argument) => {
acc[argument.name.value] = (0, parse_value_node_1.parseValueNode)(argument.value);
return acc;
}, {});
}
/**
* Polyfill of GraphQL-JS parseArguments, remove it after dropping the support of GraphQL-JS 15.0
*
* Prepares an object map of argument values given a list of argument
* definitions and list of argument AST nodes.
*
* Note: The returned value is a plain Object with a prototype, since it is
* exposed to user code. Care should be taken to not pull values from the
* Object prototype.
*/
function parseArguments(def, node, variableValues) {
const coercedValues = {};
const argumentNodes = node.arguments ?? [];
const argNodeMap = new Map(argumentNodes.map((arg) => [arg.name.value, arg]));
for (const argDef of def.args) {
const name = argDef.name;
const argType = argDef.type;
const argumentNode = argNodeMap.get(name);
if (argumentNode == null) {
if (argDef.defaultValue !== undefined) {
coercedValues[name] = argDef.defaultValue;
}
else if ((0, graphql_1.isNonNullType)(argType)) {
throw new Error(`Argument "${name}" of required type "${(0, utils_1.inspect)(argType)}" ` + "was not provided.");
}
continue;
}
const valueNode = argumentNode.value;
let isNull = valueNode.kind === graphql_1.Kind.NULL;
if (valueNode.kind === graphql_1.Kind.VARIABLE) {
const variableName = valueNode.name.value;
if (variableValues == null || !Object.prototype.hasOwnProperty.call(variableValues, variableName)) {
if (argDef.defaultValue !== undefined) {
coercedValues[name] = argDef.defaultValue;
}
else if ((0, graphql_1.isNonNullType)(argType)) {
throw new Error(`Argument "${name}" of required type "${(0, utils_1.inspect)(argType)}" ` +
`was provided the variable "$${variableName}" which was not provided a runtime value.`);
}
continue;
}
isNull = variableValues[variableName] == null;
}
if (isNull && (0, graphql_1.isNonNullType)(argType)) {
throw new Error(`Argument "${name}" of non-null type "${(0, utils_1.inspect)(argType)}" ` + "must not be null.");
}
const coercedValue = (0, graphql_1.valueFromAST)(valueNode, argType, variableValues);
if (coercedValue === undefined) {
throw new Error(`Argument "${name}" has invalid value ${(0, graphql_1.print)(valueNode)}.`);
}
coercedValues[name] = coercedValue;
}
return coercedValues;
}
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